Aa. Hamza et al., COLORIMETRIC EVALUATION OF THERMOOXIDATIVE DEGRADATION OF NYLON-6 FIBERS, Journal of applied polymer science, 57(3), 1995, pp. 265-270
Nylon 6 fibers were annealed in air at 160 degrees C for periods rangi
ng from 1 to 10 h. Their spectral reflectance values were measured. Co
lor parameters, including luminance factor, dominant wavelength, purit
y, and the color difference between annealed nylon 6 fiber samples and
unheated ones were calculated. The observed Variations in the colors
of samples were assumed due to the thermal and oxidation degradations.
The behavior of the color parameters with heating duration was compar
ed with the general kinetic curve of thermooxidative degradation of po
lymers and the match between them is discussed. The color difference D
elta E Values is recommended for monitoring the thermooxidative degrad
ation of nylon 6 fibers. (C) 1995 John Wiley & Sons, Inc.